42730149 has 32 divisors (see below), whose sum is σ = 71801856. Its totient is φ = 21957120.

The previous prime is 42730147. The next prime is 42730151. The reversal of 42730149 is 94103724.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42730147) and next prime (42730151).

It is not a de Polignac number, because 42730149 - 2¹ = 42730147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42730147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21454 + ... + 23360.

It is an arithmetic number, because the mean of its divisors is an integer number (2243808).

Almost surely, 2^42730149 is an apocalyptic number.

It is an amenable number.

42730149 is a deficient number, since it is larger than the sum of its proper divisors (29071707).

42730149 is a wasteful number, since it uses less digits than its factorization.

42730149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 42730149 is about 6536.8301951328. The cubic root of 42730149 is about 349.6054029095.

It can be divided in two parts, 427301 and 49, that added together give a triangular number (427350 = T₉₂₄).

The spelling of 42730149 in words is "forty-two million, seven hundred thirty thousand, one hundred forty-nine".